Dressing-tool



W. E. ROSS.

DRESSING TOOL. APPUCATION FILED ocr. 30, 1918,

r UNITED f PATENT sessies.

.WILLIAM n. Ross, or CLEVELAND, emo, Assiettes no uns ness Menorecrnmue convenir, os otnveten'n, euro, .A eoesoserion' QF (BI-IIR).

IDRESSXNGr-TOL.

Specicaton of Letters Patent.

Patented .rime i5, 192e.

`4lhiplieetfion ledetober 30, 1918.v Serial No.I 260,263.

To all whom @'15 may eoiwem: y l

Be it known that WILLIAM E. Ross, a

citizen of the United States' resid-ing at Cleveiend, in the county ofCuyahoge end State'of @bio have inventede.neWend-useul Dressing-lool, o'l Whielnthe teilen/ing is e specification.

lThis invention relates tortoolsfor dress-4 ing emery Wheels, lcertminrlduin Wheels and the ilre', suoli esushonzn and described in Patent No. 1,256,146? issued February 12, 1918, to The `Ross lienueeturiug Company, the object being to construct e dressing tool or" this ciess thet cenbe quickly end eeeuretely adjusted to 'beke up the weer yin tlie bearingsoecesiened by 'the use of tbe tool.

Wifi-tb this object in View .the invention oonsiste'inthe novel construction and errengenient of perte, hereinafterdescribed, illustretedf'in the accompanying drawings, and particuleriy p'v'oin'ted outin the ep pended clziims, it beingunderstoodtbet yeriogs changes in tbe form, proportions, size anu minor deteiis oeonstmetiou nitty be mede Within the seopeloi the appended cleirns7 Without departing from tbe spiritor seerioing any of tliejedventeges of tbe `in ventien.

iin tbe drewings: e

Figure represents e side elevation of improved dressing tesi.,

Fig. t? represents `front' elevation; and Fig. 3 represents en 'enlarged sectional View.

Simiier numerels of; reference e, indicate corresponding perte tlirouglioutthe several figures of tbe drawings. i

n dressing einery wheels.) eerborundum Wheeis und the lire means oi e tool ich es is'deseribed'in' seid above-mentioned patent,

the severe' strain thrown upon the tool causes the bearings to weer, resulting in e.

chattering of the'tool and the consequent production of an uneven cutting fece on the Wheel to be dressed which, as Will be reedilyf-understood by those skilled in the erft, is particularly undesirable.l n order:- to

2-.over'co1ne this' defectyl have constructed e.

dressing tool Witbe' very e'ecn'rete adj listingl means. by "Wbi'cii "the'beerings upon. which the cutting Vmenfiber'rote'tes,` may be perectiy adjusted.

` bus formed thereinu key-wey 14,

'form the inner cone members of v the'usual enge members Ibers 20 is arranged to .lie in contact witiA tlie of which theltool is secured to etoolrest 55 when in use. Formed uponl the bi'bl is e substantially U-sheped yoke if? with e cylindrical aperture 3 formed laterally .through one of its arms neer the extremity thereof. In the opposite erm and in elinement with the aperture S is e screw 'threaded aperture si. A bolt member 5 having en enierged cylindrical portion 6 and e hexagonal heed formednpon one extremity is designed to be inserted through'the aperture 3, the oppositeend of seid bolt being screwtlireeded und screwed into the threaded aperture fr. lubricant valve of thevcommon. spring type is shownl et 8 'and communicates with the lubricentpassege 9 formed longitudif 'f1 nelly through e portion' of the bolt 5 und designedfor e. purpose to be hereinafter set forth. 4'

Y'Fitting against the inner fece l0 of one iof tbe arms of the U-sbeped member,v is en annuler ienge 11 formed integral with sleeve portion 12 which sleeve p0rtion is designed' tcfit. about tbe bolt 5 and key 15 carried by me bolt fitting; Within the seid key-wey und securing the seid sleeve against rotation upon the bolt. Spotted slightly from the inner extremity the sleeve 12 is e similar sleeve l mb ilr'ewise iss-provided with e it .I Y ceiving^ the key mit. An annuler 18, identical wltu the 'iziuge ll, is formed upon the sleeve lo und designed to be engagged by n shoulder formed by the en largement 6 upoe 'tbe bolt.

Upon eeeli oi sleeves 12 and l. ted am eni'inlar ioved 20, 'wi'iieb rings belt beer which are retained by f The outer eene members @et of the-seid buil bearings are orrenged to enga-'ge the opposite sides' of an inwardly extendingbeed 25 formed upon the inner'fece ofe hollow cutting member l 26. The outer side of one of the cene. .mereQ ings7 tbe bells of innerieeeof the nnnuier ilenge li, Wlnie the outer side of the opposite inner eene contacts With the inner fece ot' the fienge .constant contact with the outside of the flange l18, pressure exerted against the said flange 18 by the shoulder 19 will rtend to tighten the ball bearing adjacent the iiange 18, while similarly, the pressure exerted by the face 10 adjacent the flange 11, will cause the said flange 11 to tighten the ball bearing adjacent it.

Threaded upon the' free end of the bolt 5 is aii ordinary hexagonal nut 27 which acts as a lock nut to position the bolt 5 after its end has been threaded through the aperture f1, to the desired point to properly adjust the bearings. By inserting the nozzle of an ordinary oil can in the lubricating valve 8, oil will be forced through the oil passage 9 and into the hollow space within the cylindrical cutting member. It will lind its way from here into the ball bearings, thus' supplying lubricant to insure an -easy operation of the device.

It will be obvious that as the bolt 5 is turned to feed its threads into the threaded aperture 4, the shoulder 19 will exert a pressure against the sleeve 16, this pressure forcing the sleeve 16 and the inner cone member 20 carried by the said sleeve, inwardly. At the saine time, the tightening effected by the pressure of the head 7 against the outer side of the arm of the U-sliaped member, adjacent the said head, will exert an inward pressure upon the opposite arm, which pressure is transmitted to the sleeve 12 thereby moving the cone member 2O carried by the saidA sleeve 12, inwardly. In the figures of the drawing the partsare illustrated in a position in which the bolt 5 has reached the limit of its adjust-ability.

It will also be seen that by using a pair of ball bearings spaced a considerable distance apart, and providing anabsolutely eX- act adjustment for each of the said bearings the rotary cutting member is perfectly supported at each side.

Having now described y'my invention',

what I claim isl. In a tool for dressing grinding wheels, in combination, a rotary dressing tool, a yoke, a shouldered shaft in said yoke, ball earings for said tool, and means whereby adjustment of said bearings between the shoulder of the shaft and one of the arms of the yoke is effected.

In a tool for dressing grinding wheels,

the combination of a rotatable member, a

supporting device, a shaftfor said rotatable member xed in said device, a pair of antifriction bearings interposed between the rotatable member and supporting device, and

. means for compensating for the wear in the bearing surfaces by varying the relation of the shaft to the supporting device.

3. In a tool for dressing grinding wheels,

the combination of al rotatable member, a

whereby the bearings-may be adjusted by varying the relation of the shaft to the device.

4. In a tool for dressing grinding wheels, the combination of a rotatable member, a yoke-shaped supportingv device, a;shouldered shaft in the arms of said device for said member, a pairof antifriction bearings in terposedbetweeni the rotatable member and the supportinggdevice and respectively disposed adjacent to Athe two sides of the rotatable member, and means coperating with the supporting device and shaft whereby the bearings may beadjusted by varying the distance between the shoulder on the shaft and the supporting device.

5. In a tool for dressing grinding wheels,l the combination of a rotatable member, a supporting device including an adjustably mounted 'shaft member, la pair of antifriction bearings interposed between the rotatable member and said shaftv member, a shoulder being provided on said shaft member, and means for adjusting the said shaft member lengthwise so as to vary therelation of the shoulder to another part of the supporting device, the adjustment of said shaft member being adapted to eliect com.

for adjusting4 said shaft member, the adi justment of the latter being adapted to effect compensation for wear in said bearings.

7 In a tool for dressing stones in combination, a rotary dressing member, a yoke, a shouldered shaft for said member mounted in said yoke, with the shoulder extending beyond the inner i'ace of one arm of the yoke and having adjustable relation to the opposite arm of the yoke, a pair of bearings between the rotary member and the shaft, the inner cone members of said bearings bein mounted in sliding relation to the shaft so that their distance between each other may be varied by varying the distance between the shoulder and the opposite arm, and

Y.means for varying said distance.

:eee-eme 8. Xn a *hooi for dressing grinding Wheels, .n'combinatiom :L otetabe member, a screwerxde shouldee shaft for seid rotatable membe, a yoke shaped supporting device in which Said shaf is mounted and into one Gf -themms of heroke 0f which the screw turning the shaft adjustment of sai "newfngs '1s eeczed by varying the dsmnce between J@he shoulder en@ haf mm of the yoke into which the screw enc?. of she sle mes.

In testimony hm? l daim the above, have hereunto Subsc'ibec my nemey 

